TestDriver works, but browser doesn't

I want to make auto-versioning of the js, css and imgs in my page, and have set everything up, IIRF loads, logs and everything, but it seems the Rules are being ignored when I try from the browser, but when I run the same urls on TestDriver they all work
perfectly.

I tried even this simple rule:

RewriteRule ^(.*)indextest.asp$ $1index.asp [L,I]

Wich works on the TestDriver, but not on the actual page, what could be the problem?